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为了实现用于校准能见度仪的标准散射体的快速高精度定标,依据标准散射体校准前向散射式能见度仪的校准原理,建立定标系统中光学系统的误差分析方法.分析标准散射体定标系统的工作原理,结合其光学系统、机械结构的加工及装调偏差,建立了标准散射体定标系统的光学系统模型并设计实验证明其正确性.分析影响定标系统中光学系统精度的主要误差,得到标准散射体定标系统中光学系统的误差传递模型.通过对畸变偏差、像面位置偏差、主点位置偏差、像面倾斜偏差和焦距偏差的分析,提出了一种系统综合误差分析的方法并建立了综合偏差模型,对每个偏差单独分析,得出畸变偏差、像面位置偏差、主点位置偏差、像面倾斜偏差和焦距偏差的偏差范围依次为0.024mm,0.399mm,0.02mm,0.28rad和0.392mm.该研究为提高用于校准能见度仪的标准散射体定标系统的精度以及校准时误差的来源分析与补偿提供理论依据.
In order to achieve fast and accurate calibration of standard scatterers for calibrating visibility meters, an error analysis method of the optical system in the calibration system is established according to the calibration principle of a standard scatterer-calibrated forward-scattering viscometer. Based on the working principle of the standard system and its optics system, processing of mechanical structure and deviation of installation and assembly, an optical system model of a standard scatterer calibration system is established and verified by design experiments.The accuracy of the optical system in the calibration system is analyzed The error of the optical system in the standard scatterer calibration system is obtained.Through the analysis of distortion, image position deviation, principal position deviation, image tilt deviation and focal length deviation, a system synthesis error Analysis method and established a comprehensive deviation model, the deviation analysis of each deviation, draw the distortion, image position deviation, the main point position deviation, image tilt deviation and focus deviation range of 0.024mm, 0.399mm, 0.02 mm, 0.28 rad, and 0.392 mm The study was conducted to improve the accuracy of the standard scatterer calibration system used to calibrate the visibility meter and The source of error analysis and compensation calibration provide a theoretical basis.